A two-dimensional computational model coupling an annular electromagnetic stirring(A-EMS)with a macroscopic heat and fluid flow analysis in Al-alloys semisolid slurry preparation was developed.The dynamic evolutions of the electromagnetic field,flow field,and temperature field were presented successfully by commercial soft'ware ANSYS 10.0 with corresponding experimental verification.A horizontally rotational electromagnetic field and,thereby,a more intensive velocity field were uniformly distributed in the stirred melt even at com-mercial frequency,and thus,a lower temperature difference in the stirred melt and subsequent uniformly free mierostructures were obtained compared with the normal electromagnetic stirring.The simulation results were in good agreement with experimental ones.
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